Macbook pro 6,2 doesn't boot in to retail snow leopard disk.

Hey everyone I got a little problem here, see I need to restore my macbook because I need to run windows in order to update my Blackberry. Bootcamp won't let me partition my drive because some files can't be moved, I did a time machine back up and I was ready for a restore. One problem the Mac OS X recovery disk that came with the macbook are lost in space some where, I did however get a retail copy from a buddy of mine. I popped it in held down the C key, apple logo came up, but no spinning wheel at the bottom. Anyone know around this?
Thanks - Mark

Pondini has identified the problem: There is no retail OS X disc that can boot a MBP 6,2. The machine requires a newer build of the OS than the most recent Snow Leopard retail disc contains. You'll need to order a replacement for the installer disc that came with your computer:
Apple Customer Relations 1-800-767-2775
Oops, I see you're in Canada. Call AppleCare and ask about replacement discs.
Message was edited by: eww

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HT1338 Purchased a used macbook pro with Mountain Lion. My old Mac runs Snow Leopard is backed up to Time machine. How do I register the operating system to me and how do I use Time Machine to move my files to the new used computer?

Purchased a used macbook pro with Mountain Lion. My old Mac runs Snow Leopard is backed up to Time machine. How do I register the operating system to me and how do I use Time Machine to move my files to the new used computer?

If you look at the User Tips tab, you will find a write up on just this subject:
https://discussions.apple.com/docs/DOC-4053
The subject of buying/selling a Mac is quite complicated. Here is a guide to the steps involved. It is from the Seller's point of view, but easily read the other way too:
SELLING A MAC A
Internet Recovery, and Transferability of OS & iLife Apps
Selling an Old Mac:
• When selling an old Mac, the only OS that is legally transferable is the one that came preinstalled when the Mac was new. Selling a Mac with an upgraded OS isn't doing the new owner any favors. Attempting to do so will only result in headaches since the upgraded OS can't be registered by the new owner. If a clean install becomes necessary, they won't be able to do so and will be forced to install the original OS via Internet Recovery. Best to simply erase the drive and revert back to the original OS prior to selling any Mac.
• Additionally, upgrading the OS on a Mac you intend to sell means that you are leaving personally identifiable information on the Mac since the only way to upgrade the OS involves using your own AppleID to download the upgrade from the App Store. So there will be traces of your info and user account left behind. Again, best to erase the drive and revert to the original OS via Internet Recovery.
Internet Recovery:
• In the event that the OS has been upgraded to a newer version (i.e. Lion to Mountain Lion), Internet Recovery will offer the version of the OS that originally came with the Mac. So while booting to the Recovery Disk will show Mountain Lion as available for reinstall since that is the current version running, Internet Recovery, on the other hand, will only show Lion available since that was the OS shipped with that particular Mac.
• Though the Mac came with a particular version of Mac OS X, it appears that, when Internet Recovery is invoked, the most recent update of that version may be applied. (i.e. if the Mac originally came with 10.7.3, Internet Recovery may install a more recent update like 10.7.5)
iLife Apps:
• When the App Store is launched for the first time it will report that the iLife apps are available for the user to Accept under the Purchases section. The user will be required to enter their AppleID during the Acceptance process. From that point on the iLife apps will be tied to the AppleID used to Accept them. The user will be allowed to download the apps to other Macs they own if they wish using the same AppleID used to Accept them.
• Once Accepted on the new Mac, the iLife apps can not be transferred to any future owner when the Mac is sold. Attempting to use an AppleID after the apps have already been accepted using a different AppleID will result in the App Store reporting "These apps were already assigned to another Apple ID".
• It appears, however, that the iLife Apps do not automatically go to the first owner of the Mac. It's quite possible that the original owner, either by choice or neglect, never Accepted the iLife apps in the App Store. As a result, a future owner of the Mac may be able to successfully Accept the apps and retain them for themselves using their own AppleID. Bottom Line: Whoever Accepts the iLife apps first gets to keep them.
SELLING A MAC B
Follow these instructions step by step to prepare a Mac for sale:
Step One - Back up your data:
A. If you have any Virtual PCs shut them down. They cannot be in their "fast saved" state. They must be shut down from inside Windows.
B. Clone to an external drive using using Carbon Copy Cloner.
1. Open Carbon Copy Cloner.
2. Select the Source volume from the Select a source drop down menu on the left side.
3. Select the Destination volume from the Select a destination drop down menu on the right
side.
4. Click on the Clone button. If you are prompted about creating a clone of the Recovery HD be
sure to opt for that.
Destination means a freshly erased external backup drive. Source means the internal
startup drive.
Step Two - Prepare the machine for the new buyer:
1. De-authorize the computer in iTunes! De-authorize both iTunes and Audible accounts.
2, Remove any Open Firmware passwords or Firmware passwords.
3. Turn the brightness full up and volume nearly so.
4. Turn off File Vault, if enabled.
5. Disable iCloud, if enabled: See.What to do with iCloud before selling your computer
Step Three - Install a fresh OS:
A. Snow Leopard and earlier versions of OS X
1. Insert the original OS X install CD/DVD that came with your computer.
2. Restart the computer while holding down the C key to boot from the CD/DVD.
3. Select Disk Utility from the Utilities menu; repartition and reformat the internal hard drive.
Optionally, click on the Security button and set the Zero Data option to one-pass.
4. Install OS X.
5. Upon completion DO NOT restart the computer.
6. Shutdown the computer.
B. Lion and Mountain Lion (if pre-installed on the computer at purchase*)
Note: You will need an active Internet connection. I suggest using Ethernet if possible because
it is three times faster than wireless.
1. Restart the computer while holding down the COMMAND and R keys until the Mac OS X
Utilities window appears.
2. Select Disk Utility from the Mac OS X Utilities window and click on the Continue button.
3. After DU loads select your startup volume (usually Macintosh HD) from the left side list. Click
on the Erase tab in the DU main window.
4. Set the format type to Mac OS Extended (Journaled.) Optionally, click on the Security button
and set the Zero Data option to one-pass.
5. Click on the Erase button and wait until the process has completed.
6. Quit DU and return to the Mac OS X Utilities window.
7. Select Reinstall Lion/Mountain Lion and click on the Install button.
8. Upon completion shutdown the computer.
*If your computer came with Lion or Mountain Lion pre-installed then you are entitled to transfer your license once. If you purchased Lion or Mountain Lion from the App Store then you cannot transfer your license to another party. In the case of the latter you should install the original version of OS X that came with your computer. You need to repartition the hard drive as well as reformat it; this will assure that the Recovery HD partition is removed. See Step Three above. You may verify these requirements by reviewing your OS X Software License.

Why does my MacBook Pro not boot up with the Snow Leopard Disk?

I have erased the entire hard drive on a 2011 macbook pro that had snow leopard on it. I was corrupted. I not insert my Snow Leopard Disk and the machine will not boot. I chose target mode to erase the hard drive from my mac book pro with Mt. Lion on it.
Thank uou for any help,
Ken

Target mode? Is there a second computer involved? Why not insert the Snow Leopard disc in the computer on which you wish to install and hold down the C key to boot from it?
If the disc came with a different computer it will not boot another model. Retail discs also may not boot all model computers, even those that came with the same major version. For example, some MBPs came with 10.6.6 but a retail disc may only be 10.6.3.

Can a macbook pro (2005) be upgraded to mavericks os x from snow leopard?

can a macbook pro (vintage 2005) be upgraded to mavericks os x from leopard?
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Sorry, but a 2005 Mac cannot run Snow Leopard. You need an Intel Mac, but you have a PPC Mac. Leopard is as far as you can go on that model.

My macbook pro model A1226 doesn't boot up and the screen is black, ived try all reset commands with no luck, or try to go in safe mode, and nothing, please help

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It looks as if there's a problem with your GPU. With a Retina machine, that would mean replacement of just about everything, except, perhaps, the flash storage drive.
Print you kernel panic when you go to your Apple Store appointment. I'm betting that it's a faulty GPU but they will be able to diagnose exactly where the problem lies.
Good luck,
Clinton

A late 2007 Mac Pro (2,1) no longer boots into 64-bit Snow Leopard

In Snow Leopard 10.6.7, my late 2007 Mac Pro (2,1/3.0 GHz/Dual Quad-Core Intel Xeon) no longer seems to be booting into 64-bit mode. I've tried holding down the 6 and 4 keys during startup and even used a Terminal sudo command to force the machine to always boot into 64-bit mode. No matter what I try, an About This Mac>More Info>Software check only reports the following:
     64-bit Kernel and Extensions: No
Before I upgraded from Leopard 10.5 to Snow Leopard 10.6, I carefully researched this, and this Mac Pro model specifically was listed by Apple as being capable of 64-bit booting — meaning that it would utilize at least some extra memory. At the time, under OS 10.5 and early versions of 10.6, when I used this Terminal command...
     ioreg -l -p IODeviceTree | grep firmware-abi
...my Mac Pro 2,1 returned this response:
     "firmware-abi" = <"EFI64">
As a result of my tests and research, I upgraded the installed SDRAM from 4MB to the theoretical maximum Apple indicated this model could support (16MB) so that Adobe Photoshop 12 (CS 5) would fully utilize extra installed memory under Snow Leopard. While using the first versions of 10.6 Snow Leopard, the machine worked fine in 64-bit mode. Now, in the wake of the 10.6.6 or the 10.6.7 update (I didn't notice which), I find that this model no longer even reports itself as being 64-bit capable, though it once did.
Now, the aforementioned Terminal query returns this response:
      "firmware-abi" = <"EFI32">
Also, the Library>Preferences folder does even not contain a file called "com.apple.boot.plist," which some owners have reported editing to force 64-bit booting.
The thing is, I spent a fair amount of money upgrading this machine to the maximum amount of SDRAM supported. I purchased it because it was advertised as being 64-bit capable and I upgraded it because Apple originally reported it as being a 64-bit model. Now, I'm not sure if the extra memory I added is being fully utilized, though Photoshop does report seeing 15547MB of available memory.
Have any other owners of these second-generation Intel Mac Pro's encountered this? Does anyone know what's going on? Am I doing something wrong when checking for the 64-bit installation or architecture? Is Snow Leopard 10.6.7 mis-reporting the architecture for this model? Or did Apple silently withdraw 64-bit support for this machine in a recent OS update?

Hatter: Thanks for the feedback and links. Well, as described in one of the threads you linked to, the document below reinforces your assertion that only Mac Pro's 3,1 or later (early 2008) support 64-bit booting in Snow Leopard:
http://support.apple.com/kb/HT3770
However, if you asked me in court, I would swear on a stack of Bibles that sometime in the past, I read an Apple document indicating that the Mac Pro 2,1 supported 64-bit booting and I really thought I recalled booting this particular machine into 64-bit mode under early versions of Snow Leopard.
I guess I'm mistaken. Certainly, this issue can be confusing. When I read them out loud to myself, even perfectly-written, accurate explanations on the subject can sound like a circular, non-sensical George Bush rationalization being delivered by comic Will Ferrell. I must not be correctly recalling the details of booting into 64-bit mode with this machine. And I guess that since Photoshop has its own memory management scheme, and I only have 16 gigabytes of SDRAM installed anyway, it doesn't matter that much. Furthermore, in one of your links, Jason Snell of Macworld writes:
"...If you’re running a Mac powered by an Intel Core 2 Duo processor or an Intel Xeon processor, your Mac is 64-bit capable. And Snow Leopard runs 64-bit-capable applications in 64-bit mode regardless of whether it’s booting into a 64-bit or 32-bit kernel. In fact, the only big advantage of booting into a 64-bit kernel would be the ability to use more than 32 gigabytes of RAM..."

I have a MacBook Pro (15-inch, Late 2008) and am currently running Snow Leopard 10.6.8. I would like to know which is the most stable upgrade for my model. I have read some reviews of Maverick and Yosemite making the older macs slower. Is this true?

I have a MacBook Pro (15-inch, Late 2008), Intel Core 2 Duo 2.53 GHz, 4GB Memory. and am currently running Snow Leopard 10.6.8.
I would like to know which is the most stable upgrade for my model? Mountain Lion, Mavericks or Yosemite?
When I had gone to the apple care centre in India a few months ago to upgrade my OSX to Mountain Lion, I was told that considering my macbook pro's specs, upgrading it would just make it less efficient, and that I should stick to Snow Leopard unless I consider buying a newer mac that would benefit from it. Is this true? I find it a bit hard to believe. Which update is most recommended?
I also notice that my mac has gotten considerably slower. While using chrome, it buffers and struggles with even just 5 tabs open. Could this have something to do with my current ios? As a precaution, I have always been making sure I have enough free space on disk i.e around 70 - 100 free out of 250GB.
Any advice is appreciated.
Thanks in advance.

Mavericks is no longer available from the App Store, so your choice is Yosemite. One option is to create a new partition (~30- 50 GB), install the new OS, and ‘test drive’ it. If you like/don’t like it it, you can then remove the partition. Do a backup before you do anything. By doing this, if you don’t like it you won't have to go though the revert process.
Check to make sure your applications are compatible.
Application Compatibility
Applications Compatibility (2)

I need to upgrade my MacBook Pro from 10.5.8 - where can I find Snow Leopard?

I just upgraded my iPhone to os6 and now can't get into iTunes. Can't upgrade iTunes because I'm still on 10.5.8. Looks like I need to upgrade to Snow Leopard, then to Lion before I can buy Mountain Lion. I can't seem to find Snow Leopard avaiable for purchase. Can anyone help?

Upgrading to Mountain Lion
You can upgrade to Mountain Lion from Lion or directly from Snow Leopard. Mountain Lion can be downloaded from the Mac App Store for $19.99. To access the App Store you must have Snow Leopard 10.6.6 or later installed.
If you need to purchase Snow Leopard contact Customer Service: Contacting Apple for support and service. The price is $29.00 plus tax. You will receive physical media - DVD - by mail.
Third-party sources for Snow Leopard are:
Snow Leopard from Amazon.com
Snow Leopard from eBay
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store.
If you need to purchase Lion contact Customer Service: Contacting Apple for support and service. The cost is $19.99 (as it was before) plus tax. It's a download.
Be sure your computer meets the minimum requirements:
Apple - OS X Mountain Lion - Read the technical specifications.
Macs that can be upgraded to OS X Mountain Lion
iMac (Mid 2007 or newer)
MacBook (Late 2008 Aluminum, or Early 2009 or newer)
MacBook Pro (Mid/Late 2007 or newer)
MacBook Air (Late 2008 or newer)
Mac mini (Early 2009 or newer)
Mac Pro (Early 2008 or newer)
Xserve (Early 2009)
Are my applications compatible?
See App Compatibility Table - RoaringApps - App compatibility and feature support for OS X & iOS.
For a complete How-To introduction from Apple see Apple - Upgrade your Mac to OS X Mountain Lion.

Potential macbook pro purchase, can I still get one with just snow leopard?

I've been reading about all the problems with Lion so far and I'd rather just wait for more updates before having it. Can I still purchase a new macbook pro with just snow leopard?

Hi M,
You can definitely still get a refurb with SL:
http://store.apple.com/us/browse/home/specialdeals/mac?mco=OTY2ODY3Nw

MacBook Pro 15" 2007 won't turn on after leaving Snow Leopard update in the drive

Hi Everyone,
After installing Snow Leopard 10.6.3, I left the cd in the drive when I turned the computer off. When I tried to turn the computer back on again, the screen told me that I needed to restart the computer by holding down on the power button. So I did, but the message came up again. I did it again. The third time, the computer wouldn't turn on at all.
I removed the cd by opening up my computer--something I had done in the past because of problems with the keyboard. (The keyboard was never fixed, and the trackpad didn't work either, so I used USB connections.The powerbutton never was affected though)
Two questions:
First, what would you say is the culprit in the first problem with the messages to restart the computer? How might I address this?
Second, knowing the secondary information about the keyboard connections, how might this affect fixing the problem? Could the powerbutton now be affected, especially since I lifted the keyboard off?
Lastly, I've looked into restarting the SMC, and turning on the computer without the button. I have tried the first of these two options, and will soon attempt the second (If anyone can send me a link to better explain turning on the computer without a button for my model, I'd be grateful.)
Any more advice (short of bringing it into the shop!) would be helpful.

Try powering up and push in your install disc(use your original install disk if you have it, maybe try the retail SL disc white with the cat as a second choice) holding the C key (this should make it boot from the disc) select your language, click continue, in the next screen in the menu bar click Utilities/Disk utilities, select (highlight your volume from the left column, default name is Macintosh HD, unless you renamed it) click the first aid tab, then click verify disk, if it comes up with errors (they will be in red font) if you get errors, run repair disk, run it repeatedly if necessary till it comes up with this disk seems ok (in green font)
Then run permissions repair.
Log out and reboot see what you get.
You may have to reinstall the 10.6.3 OSX again, do this by powering up and pushing in the disk holding the C key and follow the prompts. if you have a successful install, eject the disc, and reboot. The next thing you need to do is run software update, there will be many and you want to do them one at a time. (use an ethernet connection as opposed to wireless, as there is much chance of corruptions. The first one to run is the 10.6.8 combined v 1.1, the keep running software update one at a time till there are none offered.
Hope this helps

Macbook pro purchased new summer 2009: anxious to upgrade to snow leopard: ANYONE ever install without backup? Why not?

Any body do this without timemachine backup successfuly?

im sure they have, but you are risking losing all your data if you do not have a backup. Something could go wrong during the upgrade. If the possibility of losing all your data is acceptable, then proceed. I highly recommend backing up first.

Macbook Pro Will Not Boot to Retail Snow Leopard

I am a PC tech working on a Macboo Pro mid-2010 15" aka MacbookPro6,2 for an acquaintance (really) and I really appreciate any help/tips on this. As given to me, the MBP was totally non-responsive. Also, the owner does not have the original DVDs that came with the machine nor did she have the power adapter (long story).
Here is the summary: The MBP will not boot to a retail Snow Leopard 10.6.3 DVD; it only gets to the light grey screen with the darker grey Apple symbol and no spinning gear.
Here are the details:
1. After procuring a new AC adapter and installing a new battery, it would boot up and run but displayed an error with Steam startup. It connected to the internet via wifi, launched and ran a video dvd, etc, etc. Looked good except for the Steam error screen.
2. I went to the Steam website and downloaded the current version. After the software installed I did a normal shutdown and restart and the MBP would not boot, just went to grey Apple screen and spinning gear.
3. Booted up in single user, ran fsck -fy which reported "Invalid node structure (4, 24755)" which I understand is not good and it also reported that "The volume Untitled could not be repaired". Just on a whim I ran the fsck a couple more times not expecting anything different and that's what I got - nothing different.
4. Power up with Command R. Goes to grey screen and then tries to boot off of the bad hard drive with previous results.
5. Talked to Apple Care. To make it short, they sold me a retail Snow Leopard.
6. Installed a new blank hard drive (500GB, SATA II, WD Blue) and loaded the Snow Leopard into the Superdrive.
7. Power up and press C. Just goes to grey screen and grey Apple.
8. Power up with Option. DVD is there, click on it to launch, goes to grey Apple and that's all it does.
9. Just for grins, I popped in a Windows 7 Recovery DVD and did the power up/option to launch that and the MBP actually loads the Windows files and screen but it will not proceed because Win7 recovery doesn't recognize the MBP. At least the DVD worked.
10. Installed a different new blank hard drive and tried to launch Snow Leopard install but no dice.
11. Just for grins number two, I tried a remote install on my local network. On initial DVD access, the MBP displays a spinning globe along with the grey Apple, accesses the DVD on the remote laptop three times, but then the spinning globe disappears and everything stops. I left it for an hour and nothing else happens.
That is where I am stuck. I really appreciate any ideas on how to proceed. I can hear Genius Bar already, but was just wondering if I missed any possible steps to take myself.

You should have better luck with the correct build, as you can't use the installs as backward compatible. I also have an older machine that is for the kids, and was upgraded with the 10.6.3 retail disk which will not work with the Mid 2010.
Best of luck, and hope it helps.
If no luck, you may want to investigate hardware issues, as it should boot and install.
SJP

Clean MacBook HD with Snow Leopard Disk?

I recently purchased a new MacBook Pro and want to give my 2+ year old MacBook (first gen aluminum, shipped with Leopard and upgraded to Snow Leopard) to a friend.
Can I clean the MacBook hard drive with a retail Snow Leopard disk or must I use the original Leopard disk that came shipped with the MacBook?
I'm asking because I cannot seem to find the original disks but I do have the Snow Leopard package.
I want to get rid of all photos, email, documents, etc. Basically my user account. Will it be possible to do this from the Snow Leopard disk?
T H A N K S

Prepare Your Mac for Sale
Boot from the OS X Installer Disc One that came with the computer. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select the startup volume from the left side list then click on the Erase tab. Set the format type to Mac OS Extended (Journaled) then click on the Options button. Select the one pass Zero Data option and click on the OK button. Then click on the Erase button.
Note: You can skip the Zero Data option if you are not concerned about removing sensitive personal data from the hard drive. If you choose to skip this part of the process then it is possible for others to recover data from the hard drive. The Zero Data procedure will prevent others from getting access to your personal information.
This process will take 30 minutes to several hours depending upon the size of the hard drive. After formatting has completed quit DU and return to the installer. Now complete the OS X installation. At the completion of the installation do not restart the computer. Instead just shut it off. The next user will be presented with the Setup Assistant when they turn on the computer just as it would if new out of the box.
You can do this using the Snow Leopard DVD. Be sure to include the DVD with the computer. However, without the original discs that came with the computer the next user will not have access to the Apple Hardware Test dianostics or the ability to restore iLife.

Need to boot broken Mac-Mini using retail Snow Leopard 10.6 DVD

Hi,
In Summary:
==========
I have Mac Mini (late 2009) which does not boot anymore and I need to install Snow Leopard using retail DVD (version 10.6). The OS/installer from the DVD does not seem to boot either. I always very much appreciate the efforts of true geeks. So please, any casual beginner, please do not demoralize with something like "cannot be done" etc.
The complete story:
==================
The start of the problem:
1. All of a sudden, one fine day, on start up, my Mac Mini strated to shut itself down without no apparent reason to me. When trying to boot, it would show a progress bar for about 5 minutes - I am assuming that was disk-consistency check being performed. My best guess is that right after the use of Carbon-Copy Cloner (but I am not 100% sure) it all strated to happen.
2. Performed Mac's Disk-Util check and [Verify Volume] used to display "invalid directory item count, should be 31 instead of 29". Surface scan said disk hardware is 100% fine. Volume Repair never worked, since OS X was installed on the primary disk. I lost the DVDs that came with this Mac Mini, so the option to boot from that DVD and launch Disk Util etc. was not possible.
TechTool Pro - No Help:
3. Started googling and had to choose between [TechTool Pro] and [Disk Warrior], opted for TechTool Pro. Tried its bootable DVD only to learn that TechTool Pro cannot fix it. Again, it's surface scan suggested disk hardware is 100% fine. Sent the details to TechTool Pro support team, they couldn't help either after a couple of e-mails+data exchange. (How do I claim my lost money with TechTool Pro - suggestions appreciated as well).
Googling / Mac Forums:
4. Started looking into forums, learnt that someone had successfully repaired this problem using Ubuntu 11.04 install DVD (i.e., without installing the Ubuntu, but just using its 'try from DVD' feature). I had that handy, but forgot to disable HFS+ journaling before attempting to fix the problem. Anyway, attempting volume repair that way couldn't fix the problem as well. However this step took away my ability to boot from Mac.
5. However using Ubuntu's bootable disk, I could access Mac-HDDs contents - and was able to successfully back-up *all* my important data.
6. Googled and learnt that just attempting to boot using Ubuntu DVD can take away ability to boot using Mac bootable media - possibly due to EFI internals. Suspecting EFI is now corrupt, I tried other 'hacks' like:
6.1 eEFIt Boot Disk - which does not work at all,
6.2 Empire EFI w/ Chameleon - not sure how to proceed with options presented - trying either does not work,
6.3 Super GRUB2 - boots fine, but attempting to boot from Mac-HDD fails after a couple of seconds,
6.4 Boot-132 - boots fine, prompt asks for input, but then I cannot eject/replace the DVD due to Mac-Mini (lack of) design,
6.5 Ubuntu 11.04 / 11.10 - still boots fine - just that I cannot go into Mac-OS-X from here,
6.6 TechTool Pro bootable DVD - which used to boot fine earlier stopped to boot.
As you can see, none worked successfully. So I didn't yet try other popular rescue media - as I suspect that is not the direction I need to go into.
>> Looks like most of my problems are due to the fact that I have Mac-Mini which does not allow eject/replace of DVD from command prompt / out side of Mac-OS-X.
7. Tried emptying EFI partition, playing with EFI/Mac-OS partitions boot flags, Zapping the PRAM, nothing still allows me to boot either from Mac-HDD or any Mac-Bootable-DVD.
Current State:
8. Now while boot time, Mac displays a gray screen for a few seconds, and then a blinking prompt on black background. That's it!
Snow Leopard 10.6 Retail Install DVD:
9. Went to Mac store and bought this DVD only to witness that I can't boot from it as well. (This is a huge shocker, how is Apple able to sell these DVDs if these don't work on genuine MacMini itself. After all we are able to boot from and install Windows/Linux on a variety of Machines).
I am hoping for a very small step/fix that I am missing, since I can still see and access all Mac-HDD contents after booting from Ubuntu bootable DVD. However I am prepared for a good amount of exercise as well - assuming someone posts a valid/verified fix.
Things available right now:
==========================
A. Genuine Mac-Mini (Late 2009) who lost it's ability to boot either from its HDD or Mac-bootable DVDs (TechTools Pro, Mac OS X retail DVD)
B. Mac OS X 10.6 Retail DVD
C. NOT AVAILABLE - DVD that came with this Mac-Mini
D. Variety of rescue DVDs, listed in section 6 above
E. Another machine/PC with Ubuntu 11.04 - giving me ability to access internet
Thanks for reading.
Zita

I had a similar discussion recently with another user.
Your Mac mini (late 2009) originally came with Mac OS X 10.6.2 build 10A432 or build 10C2234 see http://support.apple.com/kb/HT1159 it would have come with an original install disc specific to your model of Mac which you could use to run Disk Utility from or to do a complete reinstall.
The retail boxed copy of Mac OS X 10.6 (Snow Leopard) was originally intended for older Macs which had previously come with Mac OS X 10.5 or 10.4. It would have on it a version of Mac OS X 10.6 or 10.6.1 which would be able to boot these older Macs, but had no need to boot newer Macs which were released after the launch of Mac OS X 10.6 since all those newer Macs already shipped with their own discs.
So it is normal that the retail boxed Snow Leopard installer does not work on your model Mac mini. You should be using the one that shipped with your Mac mini instead. I am guessing you have lost it.
Assuming you have lost the Mac mini original disc, I can suggest the following options to try and workaround this.
If you have another Mac, an older Mac, one that will be bootable using the retail Snow Leopard install disc you have, you could do either of the following.
Connect an empty external GUID partitioned hard disk to this other Mac
Boot from the retail Snow Leopard installer
Install on to the external disk
Once the install is complete, update it using the combo update not the one via Software Update to Mac OS X 10.6.8. This will add all the newer drivers needed to allow it to work on your newer Mac mini. You can download this combo update from here http://support.apple.com/kb/DL1399
You can now disconnect the external drive and connect it to your Mac mini and boot from it by holding down the Option key when you turn the Mac mini on
or a similar process if you want to wipe the Mac mini and reinstall directly on to it
Boot the Mac mini in FireWire Target Disk Mode (see http://support.apple.com/kb/ht1661 )
Connect the Mac mini as an external hard disk to the other older Mac
Boot from the retail Snow Leopard installer
Install on to the external disk
Once the install is complete, update it using the combo update not the one via Software Update to Mac OS X 10.6.8. This will add all the newer drivers needed to allow it to work on your newer Mac mini. You can download this combo update from here http://support.apple.com/kb/DL1399
You can now disconnect the Mac mini and boot from it as normal
Note: While the Mac mini is connected in FireWire Target Disk mode to the second Mac, you could backup (if you don't already have a backup) any files you need to retrieve.
If you don't have a suitable second Mac you may have to either borrow someone else's, or get the help of an Apple Store if one is in your area.

MacBook Pro (Mid 2010) will only boot in safe mode.

I've been unable to boot my MacBook Pro normally. It will boot in safe mode, and, until today, I was able to get a normal startup after resetting both PRAM and SMC. Running "Repair Disk" on the startup disk did not reveal any problems. I have also done a recovery boot to reinstall OS (10.9.1), which did not help either, though I did not wipe the hard disc first (I did back it up).
Had to take it to Apple back in January when the screen started acting funny, i.e. getting static-y and going blank for seconds at a time but then coming back. Their tests showed that there were no hardware problems, and the screen issue was eventually resolved by doing a PRAM reset. About 14 months ago, I had the logic board replaced.
Also, I'm not sure if this is related, but when I have been able to boot normally, if I quit Google Chrome, the machine will freeze completely.
Ran EtreCheck; here's the info from that:
Hardware Information:
          MacBook Pro (15-inch, Mid 2010)
          MacBook Pro - model: MacBookPro6,2
          1 2.66 GHz Intel Core i7 CPU: 2 cores
          4 GB RAM
Video Information:
          Intel HD Graphics - VRAM: 288 MB
          NVIDIA GeForce GT 330M - VRAM: 512 MB
System Software:
          OS X 10.9.1 (13B42) - Uptime: 0 days 0:50:36
Disk Information:
          ST9500420ASG disk0 : (500.11 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) / [Startup]: 499.25 GB (146.37 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
          MATSHITADVD-R   UJ-898
USB Information:
          Apple Inc. Built-in iSight
          Apple Computer, Inc. IR Receiver
          Apple Internal Memory Card Reader
          Apple Inc. Apple Internal Keyboard / Trackpad
          Apple Inc. BRCM2070 Hub
                    Apple Inc. Bluetooth USB Host Controller
FireWire Information:
Thunderbolt Information:
Configuration files:
          /etc/hosts - Count: 15
Launch Daemons:
          [System] com.adobe.fpsaud.plist 3rd-Party support link
          [System] com.adobe.SwitchBoard.plist 3rd-Party support link
          [System] com.google.keystone.daemon.plist 3rd-Party support link
          [System] com.microsoft.office.licensing.helper.plist 3rd-Party support link
          [invalid] com.oracle.java.Helper-Tool.plist
Launch Agents:
          [System] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link
          [System] com.adobe.CS5ServiceManager.plist 3rd-Party support link
          [System] com.divx.dms.agent.plist 3rd-Party support link
          [System] com.divx.update.agent.plist 3rd-Party support link
          [System] com.google.keystone.agent.plist 3rd-Party support link
          [invalid] com.oracle.java.Java-Updater.plist
          [System] com.wacom.wacomtablet.plist 3rd-Party support link
User Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link
          [not loaded] com.adobe.ARM.[...].plist 3rd-Party support link
          [not loaded] com.adobe.ARM.[...].plist 3rd-Party support link
          [not loaded] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist
          [not loaded] com.mlbam.nexdef.core.NexdefLoader.plist 3rd-Party support link
          [not loaded] com.mlbam.nexdef.plist 3rd-Party support link
          [not loaded] com.spotify.webhelper.plist 3rd-Party support link
User Login Items:
          XPSLauncher
Internet Plug-ins:
          AdobePDFViewerNPAPI: Version: 10.1.9 3rd-Party support link
          Flash Player: Version: 12.0.0.70 - SDK 10.6 3rd-Party support link
          McGraw Hill ChemDraw: Version: 12.0.3 3rd-Party support link
          DivX Web Player: Version: 3.0 - SDK 10.5 3rd-Party support link
          AdobePDFViewer: Version: 10.1.9 3rd-Party support link
          WacomNetscape: Version: 2.1.0-1 - SDK 10.8 3rd-Party support link
          googletalkbrowserplugin: Version: 5.1.4.17398 3rd-Party support link
          iPhotoPhotocast: Version: 7.0
          DirectorShockwave: Version: 11.6.5r635 3rd-Party support link
          QuickTime Plugin: Version: 7.7.3
          FlashPlayer-10.6: Version: 12.0.0.70 - SDK 10.6 3rd-Party support link
          npgtpo3dautoplugin: Version: 0.1.44.29 - SDK 10.5 3rd-Party support link
          Silverlight: Version: 5.1.20125.0 - SDK 10.6 3rd-Party support link
          OVSHelper: Version: 1.1 3rd-Party support link
          Google Earth Web Plug-in: Version: 6.1 3rd-Party support link
          Default Browser: Version: 537 - SDK 10.9
          Flip4Mac WMV Plugin: Version: 2.4.4.2 3rd-Party support link
          o1dbrowserplugin: Version: 5.1.4.17398 3rd-Party support link
          SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 3rd-Party support link
          WacomTabletPlugin: Version: WacomTabletPlugin 2.1.0.2 3rd-Party support link
          JavaAppletPlugin: Version: 14.8.0 - SDK 10.9 Outdated! Update
          AmazonMP3DownloaderPlugin101736: Version: AmazonMP3DownloaderPlugin 1.0.17 - SDK 10.4 3rd-Party support link
Safari Extensions:
          ClickToFlash: Version: 2.7.5
          ClickToPlugin: Version: 2.7.5
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 1.9 - SDK 10.9
          AppleAVBAudio: Version: 2.0.0 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins:
          Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
User Internet Plug-ins:
          WebEx64: Version: 1.0 - SDK 10.6 3rd-Party support link
3rd Party Preference Panes:
          Flash Player 3rd-Party support link
          Flip4Mac WMV 3rd-Party support link
          Growl 3rd-Party support link
          Perian 3rd-Party support link
          WacomTablet 3rd-Party support link
Old Applications:
          None
Time Machine:
          Skip System Files: NO
          Mobile backups: OFF
          Auto backup: NO - Auto backup turned off
          Volumes being backed up:
                    Macintosh HD: Disk size: 464.96 GB Disk used: 328.64 GB
          Destinations:
                    G-DRIVE [Local] (Last used)
                    Total size: 465.64 GB
                    Total number of backups: 1
                    Oldest backup: 2013-07-27 20:13:09 +0000
                    Last backup: 2013-07-27 20:13:09 +0000
                    Size of backup disk: Too small
                              Backup size 465.64 GB < (Disk used 328.64 GB X 3)
          Time Machine details may not be accurate.
          All volumes being backed up may not be listed.
Top Processes by CPU:
               1%          hidd
               1%          EtreCheck
               1%          WindowServer
               0%          mds
               0%          Google Chrome
Top Processes by Memory:
          180 MB          Google Chrome
          168 MB          com.apple.IconServicesAgent
          111 MB          Finder
          77 MB          Google Chrome Helper
          74 MB          Dock
Virtual Memory Information:
          850 MB          Free RAM
          1.80 GB          Active RAM
          839 MB          Inactive RAM
          432 MB          Wired RAM
          584 MB          Page-ins
          0 B          Page-outs
Any ideas are much appreciated!

First try doing a Software Update.
Then restart and see if that works.
If not then I would update Java.
Restart and see if that works.
If not then delete the following plist items.
[invalid] com.oracle.java.Helper-Tool.plist
[invalid] com.oracle.java.Java-Updater.plist
Should find these in:
/Macintosh HD/Library/LaunchAgents
/Macintosh HD/Library/LaunchDaemons
Now restart & see if that works.
If that doesn't work try deleting everything in:
/Macintosh HD/Library/StartupItems
Hope this helps.

Macbook pro 6,2 doesn't boot in to retail snow leopard disk.

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